The Lowdown - Construction and stamp duty

There are stamp duty advantages to building a home on vacant land. You only pay stamp duty on the land component and, if you are a first home buyer, there are stamp duty concessions on the land purchase.

If the vacant land is less than $250,000 then there is no stamp duty to pay.

Here's the info from QLD Govt re the Vacant Land stamp duty concession.

https://qro.qld.gov.au/duties/transfer-duty/concessions/homes/first-home-vacant-land/